Decision-making and integrated benefit evaluation of resistance to Anoplophora glabripennis disaster by reasonable allocation with different tree species

According to the situation of experimental fields of the irrigated areas in Ningxia Hui Autonomous Region,six types of allocation patterns with different tree species in farmland shelter forests were chosen to evaluate the integrated benefit of resisting Anoplophora glabripennis disaster,and the evaluation index system was also established.Multi-target grey strategy decision method was taken to study integrated benefit of different tree species patterns originally.Based on resistance of A.glabripennis disaster,one rational pattern was chosen by rationed evaluation of integrated benefit.The results showed that the pattern of "65% target trees+ 25% non-host trees+ 10% bait trees" was the best and the threshold value was 0.948,which can resist A.glabripennis disaster and assure optimized integrated benefit.While the integrated benefit of the pure target trees was the lowest and its threshold value was only 0.369 2.